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Yes and just like in the late 70's / early 80's there is going to be MUCH ado about this until the government REGULATES the speed limit forcing ALL of us to do what they say like it or not.
55 saves gas, that's all there is to it.
However, this thread fails to take into account certain key issues:
- Every car is different, some might get as good mpg at say 58 mph...
My '88 T-bird used to get its best at 62-63.
And the gearing does make a difference too, most of today's cars are BUILT to race... It's not that you get better mpg at 70, it's that it feels RIGHT to do it because the gears in the transmission just make the car cruise like that.
But just because mine LIKES to do 80 and 90 doesn't mean I do it.
Because wind resistance at much over 60 is what kills it all.
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